Support device for a crossbow

ABSTRACT

A crossbow includes a body, a grip portion, an aim device rack, a stock connected to the rear end of the body, and two support devices connected to two sides of the front end of the body. Each support device includes an inclined face including a low end is located corresponding to the aim device rack, and a high end located corresponding to the grip portion. The crossbow can be positioned between a first position where the two respective high ends contact the ground and an angle is formed between the inclined face of each support device and the ground, and a second position where both of the high end and the low end of each of the two inclined faces contact the ground. When the body changes from the first position to the second position, the grip portion and the aim device rack reach a weight balance.

BACKGROUND OF THE INVENTION 1. Fields of the Invention

The present invention relates to a support device for a crossbow, andmore particularly, to a support device that allows the crossbow to standupright stably.

2. Descriptions of Related Art

The conventional crossbows generally include a stock, a grip and a bow,the users have to pull the string and position the string, and the arrowis then engaged with the string. The users holds the grip by one hand,and support the body of the crossbow by the other hand. By pulling thetrigger, the string is released, and the arrow shoots out

However, the crossbow is heavy due to more parts are involved, and theweight of the crossbow makes the users feel uncomfortable when aiming atarget. On the other hand, when not in use, the conventional crossbowsdo not have any stand-up design for the users to temporally put thecrossbows aside.

The present invention intends to provide a support device that allowsthe crossbow to stand upright stably.

SUMMARY OF THE INVENTION

The present invention relates to a support device for a crossbow,wherein the crossbow comprises a crossbow having a body a grip portionon the underside of the body, an aim device rack on the top side of thebody, and a stock connected to the rear end of the body. Two supportdevices are respectively connected to two sides of the front end of thebody. Each support device comprises an inclined face which includes alow end located corresponding to the aim device rack, and a high endlocated corresponding to the grip portion. The crossbow is positionedbetween a first position and a second position. The two respective highends of the two inclined faces contact the ground when the crossbow ispositioned at the first position, and an angle is formed between theinclined face of each support device and the ground. The first positiondefines a first weight center of the crossbow. When the crossbow ispositioned at the second position, both of the high end and the low endof each of the two inclined faces contact the ground. The secondposition defines a second weight center of the crossbow. When the bodyshifts from the first position to the second position, the first weightcenter transfers to the second weight center so that the grip portionand the aim device rack reach a weight balance.

The advantages of the present invention are that the body does not falldue to the different weights of the grip portion and the aim device rackwhen the body is positioned at the second position where both of the twoinclined faces contact the ground so that the first weight center ischanges to the second weight center, and the body is stable and does notfall.

The present invention will become more apparent from the followingdescription when taken in connection with the accompanying drawingswhich show, for purposes of illustration only, a preferred embodiment inaccordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show the crossbow with the supportdevice of the present invention;

FIG. 2 shows that the body of the crossbow is positioned at the firstposition:

FIG 3. shows that the body of the crossbow is positioned at the secondposition:

FIG. 4 is a perspective view to show the second embodiment of thecrossbow with the support device of the present invention;

FIG. 5 is an exploded view of the support device of the secondembodiment of the crossbow with the support device of the presentinvention;

FIG. 6 shows that the second embodiment body of the crossbow ispositioned at the first position:

FIG. 7 shows that the second embodiment of the body of the crossbow ispositioned at the second position:

FIG. 8 shows that the assistance leg is to be used to support thecrossbow;

FIG. 9 shows that the assistance leg supports the crossbow which ispositioned at the second position;

FIG. 10 shows the third embodiment of the crossbow with the supportdevice of the present invention;

FIG. 11 shows that the third embodiment of the crossbow with the supportdevice of the present invention has two support legs to be connected tothe link, and

FIG. 12 shows that third embodiment of the crossbow with the supportdevice of the present invention is positioned at the second position.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 3, the crossbow 1 comprises a body 11, a gripportion 12 on the underside of the body 11, an aim device rack 13 on thetop side of the body 11, and a stock 14 connected to the rear end of thebody 11. Two support devices 15 are respectively connected to two sidesof the front end of the body 11, and each support device 15 has aninclined face 151 which faces forward and located beyond the front endof the body 11. Each inclined face 151 includes a low end 1511 which islocated corresponding to the aim device rack 13, and a high end 1512which is located corresponding to the grip portion 12. When not in useor shooting, the crossbow 1 can be positioned between a first positionand a second position. When the user takes a rest and waits for the nextshooting, the crossbow 1 is positioned at the first position, the tworespective high ends 1512 of the two inclined faces 151 contact theground, and an angle 16 is formed between the inclined face 151 of eachsupport device 15 and the ground as show in FIG. 2. Preferably, theangle 16 is from 10 to 45 degrees. The grip portion 12 is usuallyheavier than an aim device (not shown) on the aim device rack 13, sothat the body 11 tends to fall toward the side of the body 11 with thegrip portion 12. The first position defines a first weight center 2 ofthe crossbow 1. The user then positions the crossbow 1 at the secondposition as shown in FIG. 3. Both of the high end 1512 and the low end1511 of each of the two inclined faces 151 contact the ground. That isto say, the inclined face 151 of each support device 15 contact theground. The second position defines a second weight center 3 of thecrossbow 1. Therefore, the body 11 will tilt toward the top side of thebody 11, the first weight center 2 transfers to the second weight center3 so that the grip portion 12 and the aim device rack 13 reach a weightbalance, and the body 11 does not fall. Therefore, the crossbow 1 doesnot have to lie on the ground.

In order to allow the body 11 to be positioned on an uneven ground, thesecond embodiment of the present invention is disclosed in FIGS. 4 to 7,wherein each of the support devices 15 includes a first block 152 and asecond block 153. The first block 152 has the first end thereof fixed tothe body 11, and the second end of the first block 152 includes two lugs154. The second block 153 includes a protrusion 155 which is pivotablyconnected between the two lugs 154 by a pin 17 so that the second block153 is pivotable relative to the first block 152. Two plates 4 arelocated on two sides of each second block 153, and each plate 4 has acurved slot 41. One of two bolts 5 extends through the two plates 4 andthe second block 153, and the other one of the two bolts 5 extendthrough the two curved slots 41 of the two plates 4 and the first block152. The two bolts 5 are respectively connected to a nut. When tightenthe two bolts 5 which force the two plates 4 to secure the first andsecond blocks 152, 153 so that the second block 153 is not pivotablerelative to the first block 152. On the contrary, when the two bolts 5are loosened, the two bolts 5 release the two plates 4 not to secure thefirst and second blocks 152, 153 so that the second block 153 ispivotable relative to the first block 152. Each second block 153 has theinclined face 151 defined in one side thereof which is located oppositeto the first block 152. When in use, the second block 153 is pivotablerelative to the first block 152 according the unevenness of the ground.Therefore, the body 1 can be positioned at the second position on anuneven ground.

As shown in FIGS. 8 and 9, an assistance leg 6 is connected to each ofthe two sides of the body 11 and located close to the support device 15.The assistance leg 6 includes the first end thereof pivotably connectedto the body 11, and the second end of the assistance leg 6 is threadedlyconnected to an extension portion 7. The assistance leg 6 is pivotabletoward the low end 1511 of the inclined face 151. The extension portion7 is adjustably and threadedly connected to the assistance 6 so as tocontact the ground as shown in FIG. 9.

As shown in FIGS. 10 to 12, the crossbow can be installed with a tripodor the like. A link 18 is connected between the two support devices 15and includes a lock hole 181 defined centrally therethrough. Two supportlegs 19 angularly extend from a base 191 which is locked to the lockhole 181 of the link 18. The two support legs 19 contact the ground tosupport the front end of the body 11 so that the user can operate thecrossbow 1 in prone position.

While we have shown and described the embodiment in accordance with thepresent invention, it should be clear to those skilled in the art thatfurther embodiments may be made without departing from the scope of thepresent invention.

1. A crossbow comprising: a body, a grip portion on an underside of thebody, an aim device rack on a top side of the body, a stock connected toa rear end of the body, two support devices respectively connected totwo sides of a front end of the body, each support device having aninclined face which includes a low end which is located corresponding tothe aim device rack, and a high end which is located corresponding tothe grip portion, the crossbow being positioned between a first positionand a second position, the two respective high ends of the two inclinedfaces contacting the ground when the crossbow is positioned at the firstposition, an angle being formed between the inclined face of eachsupport device and the ground, the first position defining a firstweight center of the crossbow, when the crossbow is positioned at thesecond position, both of the high end and the low end of each of the twoinclined faces contact the ground, the second position defining a secondweight center of the crossbow, when the body shifts from the firstposition to the second position, the first weight center transfers tothe second weight center so that the grip portion and the aim devicerack reach a weight balance.
 2. The support device for a crossbow asclaimed in claim 1, wherein the angle is from 10 to 45 degrees.
 3. Thecrossbow as claimed in claim 1, wherein each of the support devicesincludes a first block and a second block, the first block has a firstend thereof fixed to the body, a second end of the first block includestwo lugs, the second block includes a protrusion which is pivotablyconnected between the two lugs by a pin so that the second block ispivotable relative to the first block, two plates are located on twosides of each second block, each plate has a curved slot, one of twobolts extends through the two plates and the second block, the other oneof the two bolts extend through the two curved slots of the two platesand the first block, the two bolts force the two plates to secure thefirst and second blocks so that the second block is not pivotablerelative to the first block, or the two bolts release the two plates notto secure the first and second blocks so that the second block ispivotable relative to the first block, each second block has theinclined face defined in one side thereof which is located opposite tothe first block.
 4. The crossbow as claimed in claim 2, wherein each ofthe support devices includes a first block and a second block, the firstblock has a first end thereof fixed to the body, a second end of thefirst block includes two lugs, the second block includes a protrusionwhich is pivotably connected between the two lugs by a pin so that thesecond block is pivotable relative to the first block, two plates arelocated on two sides of each second block, each plate has a curved slot,one of two bolts extends through the two plates and the second block,the other one of the two bolts extend through the two curved slots ofthe two plates and the first block, the two bolts force the two platesto secure the first and second blocks so that the second block is notpivotable relative to the first block, or the two bolts release the twoplates not to secure the first and second blocks so that the secondblock is pivotable relative to the first block, each second block hasthe inclined face defined in one side thereof which is located oppositeto the first block.
 5. The crossbow as claimed in claim 1, wherein anassistance leg is connected to each of the two sides of the body andlocated dose to the support device, the assistance leg includes a firstend thereof pivotably connected to the body, a second end of theassistance leg is threadedly connected to an extension portion, theassistance leg is pivotable toward the low end of the inclined face, theextension portion is adjustably and threadedly connected to theassistance and contacts the ground.
 6. The crossbow as claimed in claim5, wherein a link is connected between the two support devices andincludes a lock hole defined centrally therethrough, two support legsangularly extend from a base which is locked to the lock hole of thelink.